Scope Of Functions - Gira KNX 2139 00 Product Documentation

Scope of functions

6 Scope of functions
Valve outputs
– 6 independent electronic valve outputs.
– Valve activation (deenergised opened / closed) can be configured for each
output.
– Command value evaluation as "Switching, 1-bit", "Constant, 1-byte" or "Con-
stant, 1-byte with command value limiting value and hysteresis".
– With a 1-byte command value, the outputs are activated by pulse width modu-
lation (PWM). The cycle time can be configured for each valve output.
– Status feedback (1 bit or 1 byte) of each output possible automatically or on
read request.
– Failure signal of the valve operating voltage can be configured (1-bit).
– Overload and short-circuit signal can be set separately via a 1-bit object for
each valve output (polarity can be configured). Global reset of all short-circuit /
overload signals possible.
– Heat requirement and pump control, for positive influencing of the energy con-
sumption of a housing or commercial building. Provision of the largest active
command value directly via KNX telegram (1-byte constant). Alternatively or
additionally, evaluation of the actuator command values for provision of the
general heat requirement information in the form of limiting value monitoring
with hysteresis (1-bit switching). Activation of a circulation pump of the heating
or cooling circuit via a 1-bit KNX telegram with limiting value evaluation. Op-
tional cyclical anti-sticking protection prevents the sticking of the pump.
– Summer or winter mode can be selected via an object (polarity configurable).
– Each valve output can be locked in a forced position with bus control. Different
command values can be configured for summer and winter mode.
– Cyclical monitoring of the command value of each output can be set, taking
into account a configurable monitoring time. If no command value telegram is
received within the preset monitoring time, the valve output concerned
switches to emergency operation. Different command values can be con-
figured for summer and winter mode. The fault telegram is configurable.
– On activation with constant command values, an optional command value limit
can be configured, which allows the limitation of received command values at
the "Minimum" and "Maximum" limits.
– Automatic valve rinsing to prevent calcification or sticking of a valve which has
not been activated for some time.
– Operating hours counter to record the switch-on times of the valve outputs.
– Service mode for the maintenance or installation of valve drives (locking of the
valve outputs in a defined state). Both service mode and the locking status are
preset by a 2-bit forced operation telegram.
Heating actuator 6-gang with controller | Order no. 2139 00 | 21393100 Page 18 of 257